Reducing Catheter Dependency | HERO (Hemodialysis Reliable Outflow) Graft is the ONLY fully subcutaneous AV access solution clinically proven to maintain long-term access for hemodialysis patients with central venous stenosis. The HERO Graft is indicated for end stage renal disease patients on hemodialysis who have central venous stenosis and have exhausted all peripheral access options. Candidates: Failing fistulas or grafts due to central venous stenosis and Catheter-dependent or approaching catheter-dependency.